.black_overlay{
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index:99;
    -moz-opacity: 0.8;
    opacity:.60;
    filter: alpha(opacity=80);
    overflow: hidden;
}
.white_content {
    display: none;
    position: relative;
    top: 15%;
    margin:auto;
    width: 950px;
    height:400px;
    padding: 16px;
    border: 2px solid gray;
    border-radius:5px;
    background-color: gainsboro;
    z-index:100;
    padding:10px;
}
#content{
    overflow: auto;
    width: 100%;
    height: 100%;
}
#btnClose{
    position:absolute;
    top:-10px; right:-10px;
    width:50px; height:30px;
    z-index: 101;
}
#btnClose:hover{
    cursor: pointer;
}